FAQ How can I take advantage of destination discounts? Bringing Standard Mail to a BMC (Bulk Mail Center), SCF (Sectional Center Facility) or a DDU (Destination Delivery Unit) can reduce postage costs substantially. To select a destination click on the "Destinations" button on the Suggested mailings screen. Presort will highlight the SCF/BMC destination closest to the zip code on the post office of mailing screen. The destinations screen lists all the SCF's and BMC's loaded in the program. However, as a result of the large number of DDU's, the DDu list has been intentionally left blank and you must enter your DDU information before Presort will process data to that level. Click on a facility's name and select "ADD BMC, ADD SCF OR ADD DDU to choose these destinations and you will see that facility in the "Selected destinations" box. Click on ok then run your presort.